/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraDataChannelHandler.h
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Data Channel") [UNiagaraDataChannelWriter](API\Plugins\Niagara\UNiagaraDataChannelWriter) * GetDataChannelWriter()